Bug 205060 – [Web Animations] Move getKeyframes() "composite" properties behind the composite operations runtime flag

• Status: RESOLVED
• Resolution: CONFIGURATION CHANGED
• Component: Animations

[Antoine Quint]

We added a runtime flag for composite operations in bug 204718, we must ensure that the "composite" property on getKeyframes() output is also conditioned behind that flag.

[Antoine Quint]

This is done, per KeyframeEffect::getKeyframes():

        if (document.settings().webAnimationsCompositeOperationsEnabled()) {
            if (auto compositeOperation = keyframe.compositeOperation())
                computedKeyframe.composite = toCompositeOperationOrAuto(*compositeOperation);
        }